on worldwide markets tomorrow, as well. >> problems on both sides of the atlantic. steve, does this downgrade from s&p hit americans' pocketbooks at home or not? >> there's plenty of confusion and concern about that, carl. we've never been in a situation where the world's benchmark debt, the united states, has been downgraded. so anybody who claims to know what they're talking about here, probably is making it up. there is concern, though, about interest rates, mortgage interest rates, credit card interest rates, some concern it may go up. but i will tell you, plenty of speculation on the other side that we've seen the worst of this. the market anticipated this and it's going to digest this latest bad news with pretty good equality the way it has with other things. >> michelle, steve, thanks. a quick program note there will be special coverage tonight on the markets, beginning at 8:00 p.m. eastern on cnbc. >>> tonight we're learning more about the attack on a u.s. helicopter in afghanistan that claimed the lives of 30 americans in the deadliest single incident since the ten-year war began. fo